U3506

Control Module Input Power B Circuit High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$17–111 (est.)

Symptoms

Incorrect operation of the vehicle's electronic systems
Check engine light comes on
Malfunctions of the control unit
Intermittent electrical problems
Failure of systems dependent on the control unit

Causes

Generator malfunction
Problems with the voltage regulator
Short circuit in power supply
Wiring harness damage
Malfunction of the control unit itself

How to Fix

Check generator voltage
Inspect the power circuit for damage
Check voltage regulator
Test the control unit
Replace damaged components

Related codes

U3500 U3501 U3507